Eric Walker removed An Upper Palaeolithic Proto-writing System and Phenological Calendar from Reading, writing and literature
Eric Walker placed An Upper Palaeolithic Proto-writing System and Phenological Calendar under Origins of writing
Eric Walker placed An Upper Palaeolithic Proto-writing System and Phenological Calendar under Reading, writing and literature
Eric Walker placed An Upper Palaeolithic Proto-writing System and Phenological Calendar under Calendars
Eric Walker updated the time prefix for An Upper Palaeolithic Proto-writing System and Phenological Calendar to be "2023"
Eric Walker updated the time prefix for An Upper Palaeolithic Proto-writing System and Phenological Calendar to be "2023"